NDLI: A new algorithm for the modal analysis of 3-D arbitrarily shaped resonant cavities

Content Provider	IEEE Xplore Digital Library
Author	Arcioni, P. Bressan, M. Perregrini, L.
Copyright Year	1993
Description	Author affiliation: Dept. of Electronics, University of Pavia, Via Abbiategrasso 209, 27100 Pavia, Italy. (Arcioni, P.; Bressan, M.; Perregrini, L.)
Abstract	A new algorithm, constituting a modified version of the Boundary Element Method (BEM), is used to find the resonant frequencies and the modal fields of arbitrarily shaped cavity resonators filled with a lossless, isotropic and homogeneous medium. Differently from the standard BEM, the unknown current flowing on the cavity wall is considered inside a spherical volume bounded by an electric wall, rather than in free-space. The electric field is expressed using the Green's function of the spherical resonator, which can be approximated by a rational function of the frequency. Thank to that, the discretized problem results into a matrix linear eigenvalue problem, whose eigenvalues and eigenvectors yield the resonant frequencies and the associated modal currents. Since no frequency-by-frequency recalculation of the system matrices is required, CPU times are much shorter than in the standard BEM, especially when many resonances must be found. The cavity shape is modelled using triangular patches generated by a commercial mechanical CAD package.
Starting Page	330
Ending Page	333
File Size	5074993
Page Count	4
File Format	PDF
DOI	10.1109/EUMA.1993.336884
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-09-06
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Modal analysis Resonance Green's function methods Resonant frequency Transmission line matrix methods Eigenvalues and eigenfunctions Integral equations Electromagnetic analysis Boundary conditions Boundary element methods
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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